Ream the hole until it has a diameter of 8.00 +/- 0.003 mm.

A. It is necessary to define symbols, abbreviations and terminology for the clear understanding of the information presented in various sections of the Handbook.

B. Define signatures, short words and jargon necessary for understanding clearly of the information contained in every section of the Handbook.

C. It is important to define signs, acronyms and nomenclature for the understanding of the information provided in these sections of the Handbook.

A. As the depressurization of the alternate system, the hydraulic system A must be released to open the rudder hydraulic system selector valve and permit hydraulic fluid to flow to the rudder actuator below.

B. In order to depressurize standby system, the hydraulic system A must be depressurized to open the rudder hydraulic system selector valve and let hydraulic fluid flow to the lower rudder actuator.

C. Due to the depressurization of the alternate system, the hydraulic system A must be released to open the rudder hydraulic system selector valve and permit hydraulic fluid to flow to the bottom rudder actuator.

A. “基准面”是一个假想的垂直面。以基准面为准来测量用于计算平衡的水平距离。

B. “基准面”上有一架假设的垂直平面，出于平衡考虑，所有的力矩距离都是从它开始测量。

C. “基准面”是一个假想的垂直平面，所有的横向距离都是从它开始测量的，以达到平衡的目的。

A. 纠正措施在适航指南中给出，如检查，维修或改装，在适航指南中详细说明，或在另外一个文件中给出，如制造厂家服务通告，该服务通告在适航指南中作为参考。

B. 适航指令描述的纠正措施，比如检查、修理或改装的具体要求，可由适航指令详细给出，或包含在另外一个文件中，如制造厂家服务通告，该服务通告在适航指令中列为参考文件。

C. 适航指令或另一个文件，如制造厂家服务通告可详细给出检查、修理或大修等纠正措施，该服务通告刊登在适航指令中作为参考。

A. 发电机提供三相电压。当发电机转子速度升高时，此电压的频率会增加。

B. 发电机提供三相电压。当发动机转子速度升高时，此频率的电压会增加。

C. 发电机提供三相电压。当发电机转子频率升高时，此电压的变化速度会增加。

A. 数据应该被显示为仪表空速和指示空速来保证零误差。

B. 数据应作为标定空速呈现，而不是零机械误差的仪表空速。

C. 假定仪表误差为零，数据应以校正空速和指示空速显示。

A. If you find an incorrect quantity of air from the vent mast, do a system test.

B. A system test should be conducted once you find an abnormal airflow from the vent mast.

C. It is necessary to do a system test after you find the air quality in the vent mast is improper.

A. 临时地将绳索连接到邻近的结构上。

B. 暂时地将挂钩连接到对应的结构上。

C. 稳固连接钢索到附近的结构上。

A. If the drain hole is blocked, clean it.

B. If the drain hole is leaked, clean it.

C. If the drain hole is locked, clean it.

A. Please designate licensed personnel to do modification or maintenance to airplane.

B. Alterations or repairs to airplane shall be accomplished and noted by licensed personnel.

C. Please note that alterations or repairs to airplane must be accomplished by licensed personnel.